SnS + Ca(OH)2 🔥→ CaS + Sn(OH)2
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The reaction of tin(II) sulfide and calcium hydroxide yields calcium sulfide and tin(II) hydroxide. This reaction is an acid-base reaction and is classified as follows:
Table of contents
Reaction data
Chemical equation
- Reaction of tin(II) sulfide and calcium hydroxide
General equation
- Reaction of salt of weak base and strong base
- Salt of weak baseBrønsted acid + Strong baseBrønsted base ⟶ Salt of strong baseConjugate acid + Weak baseConjugate base + (H2O)
Oxidation state of each atom
- Reaction of tin(II) sulfide and calcium hydroxide
Reactants
Chemical formula | Name | Coefficient | Type | Type in general equation |
---|---|---|---|---|
SnS | Tin(II) sulfide | 1 | Brønsted acid | Salt of weak base |
Ca(OH)2 | Calcium hydroxide | 1 | Brønsted base | Strong base |
Products
Chemical formula | Name | Coefficient | Type | Type in general equation |
---|---|---|---|---|
CaS | Calcium sulfide | 1 | Conjugate acid | Salt of strong base |
Sn(OH)2 | Tin(II) hydroxide | 1 | Conjugate base | Weak base |
Thermodynamic changes
Changes in standard condition
- Reaction of tin(II) sulfide and calcium hydroxide◆
ΔrG 27.8 kJ/mol K 0.13 × 10−4 pK 4.87
Standard enthalpy of reaction ΔrH° kJ · mol−1 | Standard Gibbs energy of reaction ΔrG° kJ · mol−1 | Standard entropy of reaction ΔrS° J · K−1 · mol−1 | Standard heat capacity of reaction at constant pressure ΔrCp° J · K−1 · mol−1 | |
---|---|---|---|---|
per 1 mol of Equation | 43 | 27.8 | 51 | – |
per 1 mol of | 43 | 27.8 | 51 | – |
per 1 mol of | 43 | 27.8 | 51 | – |
per 1 mol of | 43 | 27.8 | 51 | – |
per 1 mol of | 43 | 27.8 | 51 | – |
Changes in aqueous solution
- Reaction of tin(II) sulfide and calcium hydroxide◆
ΔrG 27.8 kJ/mol K 0.13 × 10−4 pK 4.87
Standard enthalpy of reaction ΔrH° kJ · mol−1 | Standard Gibbs energy of reaction ΔrG° kJ · mol−1 | Standard entropy of reaction ΔrS° J · K−1 · mol−1 | Standard heat capacity of reaction at constant pressure ΔrCp° J · K−1 · mol−1 | |
---|---|---|---|---|
per 1 mol of Equation | 43 | 27.8 | 51 | – |
per 1 mol of | 43 | 27.8 | 51 | – |
per 1 mol of | 43 | 27.8 | 51 | – |
per 1 mol of | 43 | 27.8 | 51 | – |
per 1 mol of | 43 | 27.8 | 51 | – |
Thermodynamic data of reactants
Chemical formula | Standard enthalpy of formation ΔfH° kJ · mol−1 | Standard Gibbs energy of formation ΔfG° kJ · mol−1 | Standard molar entropy S° J · K−1 · mol−1 | Standard molar heat capacity at constant pressure Cp° J · K−1 · mol−1 |
---|---|---|---|---|
SnS (cr) | -100[1] | -98.3[1] | 77.0[1] | 49.25[1] |
SnS (g) | 119.2[1] | – | – | – |
Ca(OH)2 (cr) | -986.09[1] | -898.49[1] | 83.39[1] | 87.49[1] |
Ca(OH)2 (g) | -544[1] | – | – | – |
Ca(OH)2 (ai) | -1002.82[1] | -868.07[1] | -74.5[1] | – |
Ca(OH)2 (cr) 2 hydrate | -1218.4[1] | – | – | – |
* (cr):Crystalline solid, (g):Gas, (ai):Ionized aqueous solution
Thermodynamic data of products
Chemical formula | Standard enthalpy of formation ΔfH° kJ · mol−1 | Standard Gibbs energy of formation ΔfG° kJ · mol−1 | Standard molar entropy S° J · K−1 · mol−1 | Standard molar heat capacity at constant pressure Cp° J · K−1 · mol−1 |
---|---|---|---|---|
CaS (cr) | -482.4[1] | -477.4[1] | 56.5[1] | 47.40[1] |
CaS (g) | – | – | – | – |
Sn(OH)2 (cr) precipitated | -561.1[1] | -491.6[1] | 155[1] | – |
* (cr):Crystalline solid, (g):Gas
References
List of references
- 1Janiel J. Reed (1989)The NBS Tables of Chemical Thermodynamic Properties: Selected Values for Inorganic and C1 and C2 Organic Substances in SI UnitsNational Institute of Standards and Technology (NIST)
- ^ ΔfH°, -100. kJ · mol−1
- ^ ΔfG°, -98.3 kJ · mol−1
- ^ S°, 77.0 J · K−1 · mol−1
- ^ Cp°, 49.25 J · K−1 · mol−1
- ^ ΔfH°, 119.2 kJ · mol−1
- ^ ΔfH°, -986.09 kJ · mol−1
- ^ ΔfG°, -898.49 kJ · mol−1
- ^ S°, 83.39 J · K−1 · mol−1
- ^ Cp°, 87.49 J · K−1 · mol−1
- ^ ΔfH°, -544. kJ · mol−1
- ^ ΔfH°, -1002.82 kJ · mol−1
- ^ ΔfG°, -868.07 kJ · mol−1
- ^ S°, -74.5 J · K−1 · mol−1
- ^ ΔfH°, -1218.4 kJ · mol−1
- ^ ΔfH°, -482.4 kJ · mol−1
- ^ ΔfG°, -477.4 kJ · mol−1
- ^ S°, 56.5 J · K−1 · mol−1
- ^ Cp°, 47.40 J · K−1 · mol−1
- ^ ΔfH°, -561.1 kJ · mol−1
- ^ ΔfG°, -491.6 kJ · mol−1
- ^ S°, 155. J · K−1 · mol−1